Printable sleeve envelope and method of forming same

ABSTRACT

A printable sheet ( 10 ) includes a blank ( 12 ) for an envelope having a central body panel ( 14 ), a top flap, a pair of opposing side panels, and a bottom flap ( 18 ). The envelope blank is capable of being removed from the printable sheet and folded along weakened lines to form a secure sleeve for holding various items. The sheet on which the envelope blank is formed is capable of being placed in a printer to have images and/or indicia printed thereon. The envelope may also include integral index tabs for indentifying and archiving the contents of the folded envelope. The top flap, bottom flap, and opposing side panels are adapted to interconnect to secure items in the envelope.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention provides an envelope capable of securely packaging various items. Specifically, the present invention provides a foldable envelope formed on a printable sheet that is capable of receiving items such as compact discs and computer diskettes for storage, organization and transportation.

[0003] 2. General Background and State of the Art

[0004] The prior art includes numerous envelopes that are capable of securely packaging various items. Recordable compact discs, which are packaged in bulk, are sold without accompanying jewel cases. Foldable envelopes therefore present a solution to the need to protect such items. One such envelope is disclosed in U.S. Pat. No. 5,938,022, which provides an envelope having a pair of side flaps, a top flap and a bottom flap. The pair of side flaps fold inward relative to a central portion, but do not connect together. The top flap and bottom flap also fold inward relative to the central portion and connect together to provide a secure envelope within the side flaps.

[0005] Another prior art envelope is disclosed in U.S. Pat. No. 6,045,035. This patent discloses an envelope having a pair of side flaps that connect with a bottom flap. The bottom flap also connects to a top flap, providing an envelope that is secured by more than one connection between parts.

[0006] Another prior art reference, disclosed in U.S. Pat. No. 5,101,973, provides flaps that connect together to securely hold items. The flaps of this envelope are connected together using adhesives. Yet another envelope is disclosed in U.S. Pat. No. 5,348,216. This patent provides an envelope that includes flaps that fold to secure an item.

[0007] Yet another prior reference, disclosed in an international application published under the PCT and having publication number WO 99/43577, provides a pouch formed on a printable and shapeable sheet. This pouch has a semi-circular circular tabs, or cutouts, disposed on one portion of the pouch. Side panels slide into the cutouts to form a closed end. The pouch remains open at the top.

INVENTION SUMMARY

[0008] There is therefore a need for protecting and identifying items such as recordable compact discs after they have been recorded. In the case of compact discs, jewel cases are commonly used for this purpose. However, an alternate method for protecting and identifying items is to use a sleeve made of paper or a paper based card stock. It is often desirable to add printed indicia to the sleeves, and the present invention is a system and method for accomplishing this purpose.

[0009] Accordingly, it is an object of the present invention to provide an envelope that is capable of folding to securely package various items therein. It is also an objective of the present invention to provide a sheet on which the envelope is formed, with the envelope capable of being separated from the sheet after the sheet has passed through a printer or copier and custom indicia printed on the envelope portion thereof. It is a further object of the invention to provide a sheet having an envelope that is capable of having images and/or indicia printed thereon. It is yet another object of the present invention to provide an envelope that has at least one index tab, for the purpose of identifying and archiving the folded envelope.

[0010] The present invention provides a printable, foldable envelope that is capable of folding to securely package various items. The present invention includes a sheet on which an envelope is formed having weakened lines separating the outline of the envelope from the sheet. The envelope is separable from the sheet and capable of being folded along additional weakened lines to form secure packaging for various items. The sheet is capable of being placed in a printer and having images and/or indicia printed thereon, enabling the envelope to have words or pictures custom designed and printed on it by the user using his personal computer and printer to describe the envelope's contents.

[0011] The present invention also discloses a card stock construction that can be printed in an inkjet or laser printer and formed into a compact disc sleeve, and a method for utilization of same. The card stock comprises the sheet having the envelope formed thereon. The sheet is perforated in such a way as to allow the sheet to maintain integrity during the manufacturing and printing processes, while allowing the unfolded printable sleeve to be separated from the sheet without the use of tools. The sheet also has creases, scores, or perforations to create weakening lines at the locations where folding is to take place.

[0012] The envelope includes a top flap, a bottom flap, and a pair of opposing side flaps. These flaps are capable of interconnecting with each other in some manner. Therefore, the envelope, when in a folded position, advantageously does not use adhesives to hold the flaps together. The present invention also provides that the envelope may include at least one index tab for archiving the contents of the envelope. The present invention provides that in at least one embodiment, an index tab is partially removable from the top flap and capable of being raised relative to the top flap when the envelope is in a folded and stored position.

[0013] The present invention can also be alternatively described as a printable sleeve envelope comprising a sheet having a central body panel bordered by a pair of opposing side panels, each side panel having a locking tab, a bottom flap having a pair of slots therein, and a top flap having an index tab, with the central body panel, bottom flap, opposing side panels and top flap forming the outline of an envelope on the sheet. A plurality of folding lines separates the central body panel from the opposing side panels, the bottom flap and the top flap, with the opposing side panels, bottom flap and top adapted to fold along said folding lines. The slots in the bottom flap are adapted to receive the locking tabs to secure said opposing side panels and said bottom flap in a first position, and said top flap is adapted to fold such that said index tab is behind said bottom flap and between said bottom flap and said central body panel in a second position when said bottom flap is also folded relative to said folding lines.

[0014] The present invention therefore provides numerous advantages over the existing prior art. The locking tabs of the present invention insert into slots on one interfitting portion to provide a strong, secure envelope that can remain closed when handling the envelope or when forming other sections of the envelope from the sheet. Other envelopes open at the slightest application of force and do not provide any method of interlocking the panels, leaving the envelope flimsy and unreliable. Also, some prior art envelopes do not close at all edges. The present invention includes a top flap that folds over and tucks between the bottom flap and the central body panel. This top flap arrangement, coupled with the insertable locking tabs, provides a secure envelope on all sides and allows the envelope to be tilted in any direction and still retain its contents. Other features not present in the prior art include a single self-adhesive closure label that additionally allows the envelope to be used as a mailer, and tabs that may be included for indexing purposes.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015]FIG. 1 is a top plan view of a printable sheet of the present invention having an envelope formed thereon;

[0016]FIG. 2 is a perspective view of a printer (or copier) having the printable sheet of FIG. 1 being fed in a printer and the desired indicia printed thereon;

[0017]FIG. 3 is a bottom plan view of the envelope removed from the printable sheet;

[0018]FIG. 4 is the envelope of FIG. 3 with a bottom flap folded upward toward a central body panel thereof;

[0019]FIG. 5 shows the envelope with opposing side panels folded toward each other and received in the bottom flap;

[0020]FIG. 6 shows the envelope with the opposing side panels and bottom flap folded in a first position and a disc placed in the pocket formed between the bottom flap and the central body panel;

[0021]FIG. 7 shows the envelope in the first position with the top flap folded down in a tucked position such that a folding tab on the top flap is positioned between the bottom flap and the central body panel;

[0022]FIG. 8 shows another printable sheet of the present invention with the envelope formed thereon, the envelope including three index tabs capable of being punched out from the top flap of the envelope;

[0023]FIG. 9 shows the envelope separated from the sheet of FIG. 8 in a second position with one of the index tabs punched out and raised relative to the top flap; and

[0024]FIG. 10 is a perspective view of a series of folded envelopes of the invention, such as those shown in FIG. 9, each having a different index tab raised relative to the top flap.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0025]FIG. 1 shows a printable sheet 10 having an envelope 12 formed thereon. The envelope 12 is formed as a sheet or portion on the printable sheet 10. The envelope perimeter is preferably formed by a combination of cuts and microperforations. The cuts would be around complicated shapes, such as the tuck tabs on the side flaps, with intermittent ties to maintain the integrity of the sheet. Most of the perimeter would be microperforations that might, for example, have a 0.025″ cut and a 0.007″ tie. The cut and tie could be larger or smaller but would typically have dimensional ratio between 2:1 and 5:1 (the larger number being the cut dimension, and the smaller number being the tie dimension). The envelope fold lines discussed below are formed by crease in the sheet 10. This is accomplished by scoring the sheet using a slightly rounded die blade and pressing part way into the sheet to create the score. The envelope 12 includes a central body panel 14. The central body panel 14 is a substantially square portion that is surrounded by a plurality of interfitting portions. These interfitting portions include a top flap 16, a bottom flap 18 and a pair of opposing sides flaps 20 and 22. The opposing side flaps 20 and 22 each have a locking tab 24 and 26 disposed thereon. Slots 28 and 30 in the bottom flap 18 are capable of receiving the locking tabs 24 and 26, respectively, when the bottom flap 18 is folded relative to the central body panel 14. Separating the central body panel 14 from the top flap 16, bottom flap 18, and opposing side flaps 20 and 22, are a plurality of weakened lines 32 which allow the various flaps to fold relative to the central body panel 14. The top flap 16 also includes a folding tab 34.

[0026] In a preferred embodiment, the dimensions of the interfitting portions are as follows. The top flap 16 is approximately 5″ long as indicated in FIG. 1 by reference numeral 17 a, and is approximately ½″ wide without the folding tab 34, as indicated by reference number 17 b. The bottom flap 18 is approximately 5″ long as indicated by number 19 a in FIG. 1, and is about 3″ to 3⅜″ wide as shown in FIG. 1. by number 19 b. Each side panel 20 and 22 is approximately 5″ long as shown by numbers 21 a and 23 a, respectively, and approximately ½″ wide without the locking tabs 24 and 26, as shown by numbers 21 b and 23 b. The locking tabs 24 and 26 are each approximately 2⅝″ long as shown by numbers 25 a and 27 a, and are approximately ¾″ wide as shown by 25 b and 27 b. The folding tab 34 is approximately 4″ long as shown by number 35 a, and is approximately {fraction (3/8)}″ wide as shown by number 35 b. The central body panel is about 4¾″ to 5″ long on each side, as shown by 15 a. The above-itemized dimensions are approximate preferred dimensions only.

[0027] The printable sheet 10 of the present invention may be made of any material capable of securely holding items placed within the printable sheet 10. The printable sheet 10 can therefore be made of paper, cardboard, cardstock, or any other material sturdy enough to provide a secure package. Where the printable sheet is made of cardstock, the cardstock may be of such a caliper and weight as to be compatible with laser and inkjet printers. The card stock would typically be between 80#/ream and 120#/ream, ranging in caliper from 0.007″ to 0.010″. The size of the printable sheet 10 may be any size that is capable of fitting within a printer and that is also capable of providing a large enough secure envelope to securely hold items placed therein. For example, the printable sheet 10 may have the size of 8½″ regular paper. In another embodiment the printable sheet 10 may be A4 paper. Additionally, sheets that are pre-printed, sheets that have a film or foil overlaminate, and sheets that have a topcoating are all within the scope of the present invention.

[0028]FIG. 2 shows a printer or copier 36 having a stack of the printable sheets 10 of the present invention in the input tray thereof. The printable sheet 10 is capable of having an image or images and indicia 37 printed thereon by the printer 36. The indicia can be custom designed by the user on his/her personal computer. The images or indicia 37 may be words, pictures or a combination of both. The images or indicia 37 may be printed on the entire face of the envelope, and may differ completely from any printing that may exist on items to be placed in the envelope. In one embodiment, the printer 36 prints the desired images and/or indicia 37 on all surfaces of the envelope through a single pass through the printer 36. The printer 36 may be any type of commercial printer commonly used for printing images or indicia on paper. For example, the printer 36 may be an inkjet printer, a laser printer, or any other type of machine capable of both large-scale and small-scale printing capacity.

[0029]FIG. 3 shows the envelope 12 of the present invention removed from the printable sheet 10, preferably after having passed through the printer 36 and the images and/or indicia 37 printed thereon. The envelope 12 shown in FIG. 3 is in a substantially flat position with the top flap 16, opposing side flaps 20 and 22 and bottom flap 18 in position such that they are not folded relative to the weakened lines 32 separating them from the central body panel 14. FIG. 4 shows the envelope 12 having the bottom flap 18 folded along one of the weakened lines 32 such that the bottom flap 18 and central body panel 14 are laying in substantially parallel positions relative to each other. In FIG. 4, the opposing side flaps 20 and 22 and top flap 16 are not folded relative to the weakened lines 32 separating them from the central body panel 14.

[0030]FIG. 5 shows the envelope 12 of the present invention having the opposing side flaps 20 and 22 folded along the weakened lines 32 separating them from the central body panel 14. The locking tabs 24 and 26 disposed on the opposing side flaps 20 and 22 are shown in FIG. 5 inserted into the slots 28 and 30 of the bottom flap 18. This configuration provides a first position in which the top flap 16 is left open and the opposing side flaps 20 and 22 and bottom flap 18 form a pocket within which an item may be placed. FIG. 6 shows the envelope 12 of the present invention in the first position as shown in FIG. 5 with a compact disc 38 placed between the central body panel 14 and the bottom flap 18. The compact disc 38 is securely positioned between the central body panel 14 and the bottom flap 18 in the pocket formed by the opposing side flaps 20 and 22 and the locking tabs 24 and 26 inserted into the slots 28 and 30 of the bottom flap 18.

[0031] In one embodiment of the present invention, sections of the sheet are coated with a pressure sensitive adhesive. The sheet may also be partially or completely overlaminated with a release liner. In this embodiment, prior to the folding of the flaps along the weakened lines 32, the release liner is removed and the resulting selective areas of exposed pressure sensitive adhesive hold the envelope together after folding. This method of holding the flaps of the envelope together may be used in addition to the locking tabs, slots and folding tab. In an alternate, less preferred embodiment, this method may be used instead of the locking tabs, slots and folding tab.

[0032]FIG. 7 shows the envelope 12 of the present invention with the top flap 16 folded down relative to the weakened line 32 separating it from the central body panel 14. In FIG. 7, the folding tab 34 on the top flap 16 is positioned such that it inserts between the bottom flap 18 and the central body panel 14. The folding down of the top flap 16 and the insertion of the folding tab 34 completes the closure of the envelope 12 thereby providing a secure package for items placed inside the envelope, such as, for example, the compact disc 38 of FIG. 6. The envelope of FIG. 7 represents a second position in which all flaps bordering the central body panel 14 have been folded to provide the closed envelope as shown in FIG. 7.

[0033]FIG. 8 shows a second embodiment in which the printable sheet 10 and the envelope 12 have a plurality of index tabs 40 disposed on the printable sheet 10. The plurality of index tabs 40 are situated on the top flap 16 and are adapted to be at least partially removable from the top flap by punching them out along fold lines 42. The index tabs 40 can be completely removed from the sheet 10 if they are not needed.

[0034]FIG. 9 shows the envelope in the second position as also shown in FIG. 7. In FIG. 9, the index tabs 40 are shown with one of the index tabs 40 raised relative to the top flap 16. FIG. 9 shows three index tabs 40. The first index tab is raised relative to the top flap 16 and is also shown in a lowered position to indicate that it is capable of moving relative to the top flap 16. The other index tabs 40 are folded down relative to the top flap 16. In FIG. 9, the index tabs 40 that are folded down may be either partially removed from the envelope and folded down or may be still fully part of the envelope without ever having been removed. Therefore, index tabs 40 placed at different positions on the top flap 16 can be used to easily categorize or archive multiple envelopes. FIG. 10 shows a series of envelopes 12, each having a different index tab 40 raised to the top flap 16 to catalog or archive a series of envelopes.

[0035] In one embodiment of the invention, a seal may be placed on the envelope 12 over the place where the folding tab 34 inserts between the bottom flap 18 and the central body panel 14. The application of the seal, which may be a paper or film label using an adhesive to removably attach to the envelope 12, allows the envelope 12 to be used as a mailable parcel. The seal prevents the folding tab 34 from becoming separated and allows for a more secure package. Mailing information, such as addresses and postage, can be printed on the envelope 12 by hand or by the printer 36.

[0036] Another invention disclosed herein is a set of “envelopes” (see FIG. 10) (preferably user printed and folded) wherein the top flaps have a plurality of “punch-out” index tabs 40 on lines 42. Thereby the user can punch out (and fold up) different tabs in different envelopes such that the tabs are staggered, as depicted in FIG. 10.

[0037] It is to be understood that other embodiments may be utilized and structural and functional changes may be made without departing from the scope of the present invention. The foregoing description of the embodiments of the invention have been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Accordingly, many modifications and variations are possible in light of the above teaching. For example, each of the opposing side panels may have multiple locking tabs disposed thereon for insertion into slots on the bottom flap. In another example, each opposing side flap may have one locking tab and one slot disposed in a reciprocal relationship relative to the opposite side flap, such that each slot receives a locking tab on the opposite side flap. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto. 

I claim:
 1. A printable sleeve envelope capable of folding to package compact discs, the envelope comprising: a sheet capable of having at least one of images and indicia printed thereon; a plurality of weakened lines on said sheet, the weakened lines for folding said sheet to form an envelope, said envelope substantially encompassing said sheet and including a plurality of interfitting portions which are foldable to close the envelope; and a slot disposed on one of said interfitting portions to received a locking tab disposed on another one of said interfitting portions, said envelope having at least one locking tab and at least one slot, wherein the at least one locking tab and the at least one slot secure the envelope in a substantially closed position when the at least one locking tab is inserted into the at least one slot.
 2. The envelope of claim 1, further comprising a central body panel disposed between said plurality of intermitting portions on said sheet.
 3. The envelope of claim 2, wherein said central body panel is about 4⅜″ to 5″ long on each side.
 4. The envelope of claim 2, wherein said plurality of interfitting portions includes a top flap and a bottom flap capable of receiving said top flap when folded along said weakened lines.
 5. The envelope of claim 4, further comprising a folding tab disposed on said top flap and capable of inserting between said bottom flap and said central body panel when said top flap and said bottom flap are folded along said weakened lines, the folding tab enclosing the envelope when inserted between said central body panel and said bottom flap.
 6. The envelope of claim 1, wherein said plurality of interfitting portions include a pair of side flaps, said side flaps each having a locking tab.
 7. The envelope of claim 6, wherein said locking tab of each of said side flaps secures the envelope in a substantially closed position by sliding into a slot disposed on said bottom flap.
 8. The envelope of claim 1, further comprising at least one index tab disposed on one of said interfitting portions, said at least one index tab being positionable along a weakened line.
 9. The envelope of claim 6, wherein said bottom flap includes a pair of slots, each slot capable of receiving the locking tab of each of said side flaps.
 10. The envelope of claim 1, wherein the sheet is capable of receiving indicia or images applied by a printer.
 11. The envelope of claim 1, wherein said sheet is substantially 8½ by 11″ in size.
 12. The envelope of claim 1, wherein said sheet is substantially A-4 paper in size.
 13. The envelope of claim 1, wherein said sheet is a single layer of card stock.
 14. A printable, foldable sleeve envelope for securely holding flat articles, the envelope comprising: a sheet having a plurality of weakened lines formed thereon, said weakened lines allowing said sheet to fold to form an envelope; a central body panel bordered by a plurality of interfitting portions and separated from said interfitting portions by said weakened lines; and a pair of slots formed on one of said interfitting portions on said sheet, each slot capable of receiving a locking tab formed on another of said interfitting portions to secure the envelope in a substantially closed position.
 15. The envelope of claim 14, wherein said interfitting portions are die cut onto said sheet.
 16. The envelope of claim 14, wherein said plurality of interfitting portions include a slotted bottom flap, a pair of side flaps each having a locking tab, and a top flap, said top flap capable of folding and inserting between said central body panel and said slotted bottom flap to securely enclose said envelope.
 17. The envelope of claim 16, wherein said slotted bottom flap includes said pair of slots, each slot capable of receiving the locking tab formed on each side flap, to secure said side flaps to said bottom flap when folded.
 18. The envelope of claim 16, further comprising a folding tab disposed on said top flap and capable of inserting between said bottom flap and said central body panel when said top flap and said bottom flap are folded along said weakened lines, the folding tab enclosing the envelope when inserted between said central body panel and said bottom flap.
 19. The envelope of claim 14, further comprising at least one index tab disposed on one of said interfitting portions, said at least one index tab being positionable along said at least one weakened line.
 20. The envelope of claim 17, wherein said side portions are foldable along said weakened lines to engage with said bottom flap and said top flap is foldable to engage with said bottom flap to substantially enclose the envelope.
 21. The envelope of claim 14, wherein the sheet is capable of receiving indicia or images applied by a printer.
 22. The envelope of claim 14, wherein said sheet is substantially 8½″ by 11″ in size.
 23. The envelope of claim 14, wherein said sheet is substantially A-4 paper in size.
 24. The envelope of claim 14, wherein said sheet is a single layer of card stock.
 25. A method for packaging a flat article, comprising: providing an envelope portion on a sheet having weakened lines where the sheet is to be folded to form an envelope, the envelope including a major surface of said envelope which is substantially square and further including a plurality of interfitting portions for closing the envelope; printing at least one of indicia and images on the sheet; separating the envelope portion from the sheet; folding the plurality of interfitting portions to form an envelope having an open top; and inserting a locking tab in one of said plurality of interfitting portions in a slot in another of said plurality of interfitting portions to secure the envelope in a substantially closed position, said plurality of interfitting portions being foldable along said weakened lines.
 26. The method of claim 25, further comprising sealing the envelope with an adhesive closure material to provide further security for transporting the envelope.
 27. The method of claim 25, further comprising coupling said plurality of interfitting portions to provide a secure enclosure in the envelope.
 28. The method of claim 25, wherein said plurality of interfitting portions includes a bottom flap, a top flap, and a pair of side flaps.
 29. The method of claim 28, further comprising inserting a compact disc into the envelope and completing the closure of the envelope by folding over a folding tab disposed on said top flap.
 30. The method of claim 28, further comprising securing the envelope by folding said bottom flap and said pair of side flaps along said weakened lines and inserting a locking tab disposed on each of said side flaps into a slot disposed in said bottom flap, the bottom flap having at least one slot.
 31. The method of claim 25, wherein the sheet is substantially 8½″ by 11″ or A-4 paper in size.
 32. The method of claim 25, wherein said sheet is a single layer of card stock.
 33. The method of claim 28, further comprising providing an index tab disposed on said top flap, the index tab being partially separable from the envelope and foldable relative to said top flap along an index tab fold line.
 34. The method of claim 28, further comprising providing a plurality of index tabs disposed on said top flap, the plurality of index tabs being partially separable from the envelope and foldable relative to said top flap along an index tab fold line.
 35. A method of securely holding flat articles with a printable, foldable sleeve envelope, comprising: providing a plurality of weakened lines on a sheet having the form of an envelope die cut thereon, the envelope including a plurality of interfitting portions, said weakened lines allowing said interfitting portions to be folded along said weakened lines; removing said envelope from said sheet and folding said interfitting portions along said weakened lines to form said envelope; and inserting a locking tab of one of said plurality of interfitting portions in a slot in another of said plurality of interfitting portions to secure the envelope in a substantially closed position, said plurality of interfitting portions being foldable along said weakened lines.
 36. The method of claim 35, further comprising coupling said interfitting portions to provide a secure enclosure in the envelope.
 37. The method of claim 35, further comprising printing at least one of indicia and images on said sheet.
 38. The method of claim 35, wherein said plurality of interfitting portions includes a bottom flap, a top flap, and a pair of side flaps, said interfitting portions bordering a substantially square portion.
 39. The method of claim 38, further comprising inserting a compact disc into the envelope and completing the closure of the envelope by folding over a folding tab disposed on said top flap.
 40. The method of claim 38, further comprising securing the envelope by folding said bottom flap and said pair of side flaps along said weakened lines and inserting a locking tab disposed on each of said side flaps into a slot disposed in said bottom flap, the bottom flap having at least one slot.
 41. The method of claim 35, wherein said sheet is substantially 8½″ by 11″ in size.
 42. The method of claim 35, wherein said sheet is substantially A-4 paper in size.
 43. The method of claim 38, further comprising providing an index tab disposed on said top flap, the index tab being partially separable from the envelope and foldable relative to said top flap along an index tab fold line.
 44. The method of claim 38, further comprising providing a plurality of index tabs disposed on said top flap, the plurality of index tabs being partially separable from the envelope and foldable relative to said top flap along an index tab fold line.
 45. The method of claim 35, wherein said sheet is a single layer of card stock.
 46. An envelope comprising: an envelope sheet including (a) a central body panel, (b) a pair of opposing side panels bordering the central body panel, each side panel having a locking tab, (c) a bottom flap having a pair of slots therein, (d) a top flap having a folding tab, (e) a first fold line separating one of the opposing side panels from the central body panel, (f) a second fold line separating the other of the opposing side panels from the central body panel, (g) a bottom folding line separating the bottom flap from the central body panel, and (h) a top folding line separating the top flap from the central body panel; and the slots in the bottom flap adapted to receive the locking tabs to secure the opposing side panels and the bottom flap in a first position, and the top flap adapted to fold such that the folding tab is behind the bottom flap and between the bottom flap and the central body panel when the bottom flap is also folded relative to the bottom folding line in a second position.
 47. The envelope of claim 46, wherein said envelope is configured to secure substantially flat articles.
 48. The envelope of claim 46, wherein said top flap folds between said bottom flap and said central body panel in said second position to substantially close said envelope.
 49. The envelope of claim 46, wherein said envelope is configured to provide secure flat storage for a disk.
 50. The envelope of claim 46, wherein said envelope is configured to provide secure storage for a compact disc.
 51. The envelope of claim 46, wherein said central body panel is about 4⅜″ to 5″ long on each side.
 52. The envelope of claim 46, wherein said envelope sheet is capable of having indicia or images printed thereon by passing through a printer or copier.
 53. The envelope of claim 52, wherein said indicia or images are printed by a printer.
 54. The envelope of claim 46, wherein the top flap further comprises an index tab, the index tab being partially separable from the envelope sheet and having an index tab fold line, the index tab being foldable relative to the top flap along the index tab fold line after being partially separated from the envelope sheet.
 55. The envelope of claim 54, wherein the top flap further comprises a second index tab and a third index tab, each of the second and third index tabs being partially separable from the envelope sheet and having an index tab fold line, the second and third index tabs being foldable relative to the top flap along the index tab fold lines after being partially separated from the envelope sheet.
 56. A method of producing an envelope formed on a printable sheet, said method comprising: providing an envelope sheet having (a) a central body panel, (b) a pair of opposing side panels bordering the central body panel, each side panel having a locking tab, (c) a bottom flap having a pair of slots therein, and (d) a top flap having a folding tab, the central body panel, bottom flap, opposing side panels and top flap forming the outline of an envelope on said sheet, said central body panel, said pair of opposing sides, said bottom flap and said top flap being separated by a plurality of folding lines defining the perimeter of said envelope, the plurality of folding lines including (e) a first folding line separating one of the opposing side panels from the central body panel, (f) a second folding line separating the other of the opposing side panels from the central by panel, (g) a bottom folding line separating the bottom flap from the central body panel, and (h) a top folding line separating the top flap from the central body panel; folding said pair of opposing sides, said bottom flap and said top flap relative to said plurality of folding lines to form an envelope; and inserting said folding tab between said bottom flap and said central body panel when said bottom flap is folded in a first position, and said slots in said bottom flap receiving said locking tabs when said bottom flap is in said first position.
 57. The method of claim 56, further comprising an index tab on said top flap, the index tab being partially separable from the sheet and having an index tab fold line, the index tab being foldable relative to the top flap along the index tab fold line after being partially separated from the sheet.
 58. The method of claim 56, further comprising a second index tab and a third index tab on the top flap, each of the second and third index tabs being partially separable from the sheet and having an index tab fold line, the second and third index tabs being foldable relative to the top flap along the index tab fold lines after being partially separated from the sheet.
 59. The method of claim 56, further comprising printing at least one of indicia and images on said sheet.
 60. The method of claim 56, further comprising inserting a compact disc into the envelope and folding over and tucking in the top flap.
 61. The method of claim 56, further comprising providing a printable sheet on which said envelope sheet is formed.
 62. The method of claim 61, further comprising removing the envelope sheet from the printable sheet.
 63. The method of claim 61, further comprising passing the printable sheet through a printer or copier and printing at least one of images and indicia on the envelope sheet.
 64. The method of claim 63, further comprising separating the envelope from the sheet after at least one of images and indicia have been printed thereon.
 65. The method of claim 56, further comprising passing the envelope sheet through a printer or copier and printing at least one of images or indicia thereon.
 66. An envelope comprising: a sheet including (a) a central body panel, (b) a pair of opposing side panels bordering the central body panel, (c) a bottom flap, (d) a top flap having a folding tab, (e) a first folding line separating one of the opposing side panels from the central body panel, (f) a second folding line separating the other of the opposing side panels from the central by panel, (g) a bottom folding line separating the bottom flap from the central body panel, and (h) a top folding line separating the top flap from the central body panel, the pair of opposing sides and the bottom flap being attachable together to define a pocket having an open top, and the top flap being being capable of folding relative to the top folding line to at least substantially enclose the open top; and an index tab on said top flap, the index tab being partially separable from the sheet and having an index tab fold line, the index tab being foldable relative to the top flap along the index tab fold line after being partially separated from the sheet.
 67. The envelope of claim 66, further comprising a pair of locking tabs, each side panel having one of said locking tabs disposed thereon, and a pair of slots disposed on said bottom flap.
 68. The envelope of claim 67, wherein the slots in the bottom flap are adapted to receive the locking tabs to secure the opposing side panels and the bottom flap in a first position, and the top flap adapted to fold such that the folding tab is behind the bottom flap and between the bottom flap and the central body panel when the bottom flap is also folded relative to the bottom folding line in a second position.
 69. The envelope of claim 66, wherein the top flap further comprises a second index tab and a third index tab, each of the second and third index tabs being partially separable from the sheet and having an index tab fold line, the second and third index tabs being foldable relative to the top flap along the index tab fold lines after being partially separated from the sheet.
 70. A sheet comprising a foldable envelope, the envelope having a perimeter defined by a weakened separation line and including (a) a central body panel, (b) a pair of opposing side panels bordering the central body panel, (c) a bottom flap, and (d) a top flap having a folding tab, the top flap having index tab, the index tab being partially separable from the sheet and having an index tab fold line, the index tab being foldable relative to the top flap along the index tab fold line after being partially separated from the sheet.
 71. The sheet of claim 70, further comprising a pair of locking tabs, each side panel having one of said locking tabs disposed thereon, and a pair of slots disposed on said bottom flap.
 72. The sheet of claim 71, wherein the slots in the bottom flap are adapted to receive the locking tabs to secure the opposing side panels and the bottom flap in a first position, and the top flap adapted to fold such that the folding tab is behind the bottom flap and between the bottom flap and the central body panel when the bottom flap is also folded relative to the bottom folding line in a second position.
 73. The sheet of claim 70, wherein the top flap further comprises a second index tab and a third index tab, each of the second and third index tabs being partially separable from the sheet and having an index tab fold line, the second and third index tabs being foldable relative to the top flap along the index tab fold lines after being partially separated from the sheet.
 74. An envelope formed on a printable sheet, said envelope comprising: a central body panel bordered by a pair of opposing side panels, each side panel having a locking tab, a bottom flap having a pair of slots therein, and a top flap having an index tab; a plurality of folding lines separating the central body panel from the opposing side panels, the bottom flap and the top flap, said opposing side panels, bottom flap and top flap adapted to fold along said folding lines, said slots in said bottom flap adapted to receive said locking tabs to secure said opposing side panels and said bottom flap in a first position, and said top flap adapted to fold such that said index tab is behind said bottom flap and between said bottom flap and said central body panel when said bottom flap is also folded relative to said folding lines in a second position.
 75. The envelope of claim 74, wherein said envelope is configured to secure substantially flat articles
 76. The envelope of claim 74, wherein said top flap folds between said bottom flap and said central body panel in said second position to substantially close said envelope.
 77. The envelope of claim 74, wherein said envelope is configured to provide secure storage for a disk.
 78. The envelope of claim 74, wherein said envelope is configured to provide secure storage for a compact disc.
 79. The envelope of claim 74, wherein said sheet is capable of having indicia or images printed thereon.
 80. The envelope of claim 79, wherein said indicia or images are printed by a printer.
 81. A method of producing an envelope formed on a printable sheet, said method comprising: providing a sheet having a central body panel, said central body panel bordered by a pair of opposing side panels, each side panel having a locking tab, a bottom flap having a pair of slots therein, and a top flap having an index tab, the central body panel, bottom flap, opposing side panels and top flap forming the outline of an envelope on said sheet; and separating said central body panel, said pair of opposing sides, said bottom flap and said top flap by a plurality of folding lines defining the perimeter of said envelope; and folding said pair of opposing sides, said bottom flap and said top flap relative to said plurality of folding lines to form an envelope, said index tab being insertable between said bottom flap and said central body panel when said bottom flap is folded in a first position, and said slots in said bottom flap receiving said locking tabs when said bottom flap is in said first position.
 82. The method of claim 81, further comprising providing a plurality of index tabs disposed on said top flap, the plurality of index tabs being partially separable from the envelope and foldable relative to said top flap along an index tab fold line. 